Preparing local strain patterns in graphene by atomic force microscope based indentation

Nemes Incze, Péter and Kukucska, Gergő and Koltai, János and Kürti, Jenő and Hwang, Chanyong and Tapasztó, Levente and Biró, László Péter (2017) Preparing local strain patterns in graphene by atomic force microscope based indentation. SCIENTIFIC REPORTS, 7. p. 3035. ISSN 2045-2322

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Abstract

Patterning graphene into various mesoscopic devices such as nanoribbons, quantum dots, etc. by lithographic techniques has enabled the guiding and manipulation of graphene's Dirac-type charge carriers. Graphene, with well-defined strain patterns, holds promise of similarly rich physics while avoiding the problems created by the hard to control edge configuration of lithographically prepared devices. To engineer the properties of graphene via mechanical deformation, versatile new techniques are needed to pattern strain profiles in a controlled manner. Here we present a process by which strain can be created in substrate supported graphene layers. Our atomic force microscope-based technique opens up new possibilities in tailoring the properties of graphene using mechanical strain.

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